Black’s cemetery at Upper Marsh Creek Presbyterian Church in Cumberland Township, Adams County, Pennsylvania
Contains monuments bearing these names and dates:
Nathaniel Porter, 1749
William Porter, 1753
Violet Porter, 1735
Source: Notes and Queries Historical Biographical and Genealogical Relating Chiefly to Interior Pennsylvania; Edited by William Henry Egle, M.D., M.A.; Harrisburg, Penna.; Harrisburg Publishing Company, 1898. page 121.